US 9,810,358 B2
Male push lock pipe connection system
Thomas L. Hennemann, Cottage Grove, MN (US); and Garth H. Saul, Faribault, MN (US)
Assigned to Aqseptence Group, Inc., New Brighton, MN (US)
Filed by Thomas L. Hennemann, Cottage Grove, MN (US); and Garth H. Saul, Faribault, MN (US)
Filed on Jun. 29, 2009, as Appl. No. 12/494,073.
Application 12/494,073 is a continuation in part of application No. 12/365,000, filed on Feb. 3, 2009.
Prior Publication US 2010/0194104 A1, Aug. 5, 2010
Int. Cl. F16L 37/091 (2006.01); F16L 37/084 (2006.01); F16L 37/088 (2006.01); F16L 37/098 (2006.01)
CPC F16L 37/091 (2013.01) [F16L 37/088 (2013.01); F16L 37/0842 (2013.01); F16L 37/098 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A single piece of pipe connectable to an adjacent pipe, said single piece of pipe comprising:
a female end with an interior surface and a female leading edge terminating said female end, said interior surface of said female end defining a male end receiving chamber;
a male end with a male leading edge and an exterior surface, said exterior surface having a circumference smaller in diameter than the diameter of said male end receiving chamber of said female end;
an intermediate length between said female end and said male end;
at least one exterior circumferential groove on the exterior surface of said male end having a first exterior sidewall, a second exterior sidewall, a bottom exterior surface and a shoulder positioned within said at least one exterior circumferential groove;
at least one band seated within said at least one exterior circumferential groove on said male end, said at least one band having its ends joined to form a ring;
a first plurality of rigid fingers, each rigid finger having opposed distal and proximal ends, the proximal end of each of said first plurality of rigid fingers being embedded within said at least one band, and each of said first plurality of rigid finger extending from within and out of said exterior circumferential groove, said first plurality of rigid fingers being displaceable and being configured to rotate about (i) said shoulder of said at least one exterior circumferential groove when said first plurality of rigid fingers are in contact with said shoulder of said at least one exterior circumferential groove and (ii) their proximal ends when said first plurality of rigid fingers are not in contact with said shoulder of said at least one exterior circumferential groove, wherein the ring of said at least one band is configured to bias the first plurality of rigid fingers towards their non-displaced position when said first plurality of rigid fingers rotate about said shoulder of said at least one exterior circumferential groove; and
at least one interior circumferential groove on the interior surface of said female end, having a first interior sidewall, a second interior sidewall, and a bottom interior surface, said internal circumferential groove being sized and positioned to receive therein a second plurality of rigid fingers, wherein said second plurality of rigid fingers have opposed distal and proximal ends, the proximal end of each of said second plurality of rigid fingers being positioned proximal to a corresponding second exterior sidewall of at least one exterior circumferential groove on a male end of said adjacent pipe, and the distal end of each of said second plurality of rigid fingers being positioned proximal to the first interior sidewall of the at least one internal circumferential groove of said female end of said single piece of pipe.